It's interesting to consider the "full body" deepfakes, but wouldn't the limitation of face deepfakes be even more constraining here? The proportions of limbs'

It's interesting to consider the "full body" deepfakes, but wouldn't the limitation of face deepfakes be even more constraining here? The proportions of limbs' length vs torso, hip / shoulder ratio etc -- it seems like a more effective approach (and something already in commercial use) would be mocap + models -- and that's just for still images. For motion, there's yet another layer of fakery required (and this is something security / identity detection systems tackle nowadays) -- stuff like gait, typical motions or gestures or even poses. To deepfake a Tom Cruise clone, you need to not just look like the actor, but project the same manic energy, and signature movements.